KR20150022604A - Segmented Tire Mold - Google Patents

Abstract

The present invention relates to a segmented tire mold, and more particularly to a segmented tire mold having a tread ring formed as a plurality of movable sectors for forming tire treads and a side wall ring for molding tire sidewalls A plurality of tread sectors for forming a tread portion of the tire; a mold back portion for allowing movement of the tread sector between an open position and a closed position while supporting the tread sector; and two cell inserts And two side plates on which each cell insert is mounted, the tread sector and the cell insert being cast from a single casting model to form deeper and more complex features in the sidewall cells and extending from the tread onto the sidewalls Shaped features can be better aligned in size, shape, and appearance , There is an effect that it can be more easily adjusted.

Description

[0001] Segmented Tire Mold [

The present invention relates to a segmented tire mold, and more particularly to a segmented tire mold having a tread ring formed as a plurality of movable sectors for forming a tire tread and a side wall ring for molding the tire sidewall .

Generally, the tread ring is formed using aluminum casting. At this time, the side wall cells are made by machining the steel sheet so as to have necessary molding elements.

However, in order to form deep tread-like portions in the side wall cells, there is a problem in that the shape portions are aligned with the tread ring and a deep or complicated shape portion is formed on the side wall cell surface.

It is an object of the present invention to provide a mold that is preferably applied to a two-piece segment mold and which is divided along the axial centerline of the mold cavity or along its centerline and comprises an upper half and a lower half and each half comprises tread sectors and sidewall cells The present invention provides a segmented tire mold having a plurality of segments.

It is another object of the present invention to provide a segmented tire mold in which the tread segments in the one-piece mold are not divided along the axial center but are mounted on the upper or lower half of the mold and are mounted so as to be divided when the mold is opened.

The present invention relates to a tire comprising: a plurality of tread sectors for forming a tread portion of a tire; a mold back portion for allowing movement of the tread sector between an open position and a closed position while supporting the tread sector; A cell insert and two side plates on which each cell insert is mounted, wherein the tread sector and the cell insert are molded from a single casting model.

And a circumferential mounting rib that is receivable in a mounting groove of the side plate at each rear side of the cell insert of the present invention, wherein the mounting groove is formed by a cell insert to secure a proper fit of the tread sector and the cell insert during the tire molding process. And having a greater radial width than the mounting ribs to accommodate relative expansion upon heating of the side plates, each of the cell inserts having a vent extending therethrough from the molding surface to the rear surface Wherein each of the side plates comprises passages in communication with an internal passageway that can be connected to a vacuum source at the mating face and wherein the grooves on the cell insert rear face And is connected to the ventilation path in the side plate.

The present invention is capable of forming deeper and more complex features in sidewall cells by molding molded parts, tread sectors and sidewall cells from a single casting model, wherein the features that extend from the tread onto the sidewalls are sized, It can be better aligned in the outline, and there is an effect that it can be more easily aligned.

1 is a sectional view of a tire mold according to an embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

1 is a cross-sectional view of a tire mold according to an embodiment of the present invention.

As shown in Figure 1, a tire mold according to an embodiment of the present invention comprises a plurality of tread sectors 20 for forming a tread portion of a tire, a plurality of tread sectors 20 for supporting the tread sectors and being movable between an open position and a closed position A mold rear portion 22 which permits the molding, a two cell insert 24 and two side plates 26 for molding the side walls of the tire. Each cell insert 24 is mounted on a side plate 26.

Preferably, the tread sector 20 and the cell insert 24 are preferably formed by aluminum casting, which facilitates forming the deep and complex features shown in FIG. Other materials that can be cast with the strength and durability needed to form and vulcanize the tire can be used. The mold rear portion 22 and the side plate 26 may be formed of steel.

1, the cell insert 24 has a circumferential mounting rib 30 for inserting the mounting groove 32 into the side plate at the rear side. The mounting grooves 32 are formed in the mounting inserts 30 so as to receive relative expansion during heating of the cell inserts 24 and side plates 26 to ensure proper mating of the tread sectors and the cell inserts during the tire building process. The width is wider in the radial direction. A small gap 34 can be seen between mounting rib 30 and mounting groove 32.

It also shows the mold in the cooled state, i.e. at ambient temperature, and the gap 34 is in the position shown. When the mold is heated to the cure temperature, the relative thermal expansion of the cell insert 24 and the side plate 26 will create a gap on the opposite side, such as the gap shown in FIG.

On the other hand, the cell insert 24 has a hole or vent 40 extending through the molding surface 42 (front surface) and extending to the rear surface 44, a groove (not shown) formed on the back surface to connect with the ventilation path 46 of the side plate 41). The side plates 26 each include a passageway or groove 48 communicating with an internally formed vent path 46 that can be connected to a vacuum source (not shown) at the mating surface.

Thus, the present invention can form deeper and more complex features in the sidewall cells by molding molded parts, tread sectors and sidewall cells from a single casting model, and the features extending over the sidewalls in the tread are sized, Shape, and outline, and there is an effect that it can be more easily aligned.

20: Tread Sector
22: mold rear portion 24: cell insert 26: side plate
30: Mounting rib
32: mounting groove 32: mounting groove 34: small gap
40: Vents
42: Molding face front 44: Molding name rear face 46:
48: Home

Claims (2)

A plurality of tread sectors for forming a tread portion of the tire; a mold rear portion for supporting the tread sector and allowing movement of the tread sector between an open position and a closed position; two cell inserts for molding the side wall of the tire; And two side plates on which each cell insert is mounted, wherein the tread sector and the cell insert are molded from a single casting model.
The method according to claim 1,
And a circumferential mounting rib that is receivable in a mounting groove of the side plate at each rear side of the cell insert, the mounting groove comprising a plurality of mounting grooves, each of the cell inserts and side plates And having a greater radial width than the mounting ribs to accommodate relative expansion upon heating,
Each of the cell inserts having a vent extending from the molding surface to the rear surface and having grooves formed in the rear surface, each of the side plates having an interior Wherein the grooves on the rear side of the cell insert are connected to the ventilation path in the side plates when installed on the side plates.

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